Blood Glucose Control (Cambridge O Level Biology)

Insulin is a hormone that regulates the concentration of glucose in the blood.

Describe what is meant by the term hormone.

Person A and person B were monitored to see how well they could control their blood glucose concentration.

They did not eat or drink anything other than water for eight hours before the monitoring began. They then drank a glucose solution.

Blood samples were taken at 30-minute intervals.

The blood samples were tested for glucose concentration.

The results are shown in Fig. 1.

Fig. 1

Calculate the percentage increase in the blood glucose concentration in person A between 60 and 90 minutes.

Give your answer as a percentage and to the nearest whole number.

[3]

Using Fig. 1, compare the response of person A with the response of person B after the ingestion of glucose.

[3]

Using Fig. 1, explain the response of person B after 90 minutes.

[4]

Person A had Type 1 diabetes.

Outline the treatment of Type 1 diabetes.

[2]